Primary canine relationship was evaluated and recorded as class 1: the tip of the maxillary primary canine tooth is in the same vertical plane as the distal surface of the mandibular primary canine; class 2: the tip of the maxillary primary canine tooth is mesial to the distal surface of the mandibular primary canine; class 3: the tip of maxillary primary canine is distal to the distal surface of the mandibular primary canine [9].

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